77936-93-7

Upstream product

• 623-73-4 diazoacetic acid ethyl ester 
• 70169-91-4 6-acetyl-7-ethoxycarbonylpyrazolo<1,5-a>pyrimidine-3-carbonitrile 
• 77936-76-6 ethyl 6-acetyl-3-cyano-4,7-dihydropyrazolo<1,5-a>pyrimidine-7-carboxylate 
• 77936-67-5 ethyl 3-(4-cyanopyrazoleamino)methylene-2,4-dioxovalerate 
• 57397-70-3 ethyl 3-(ethoxymethylene)-2,4-dioxovalerate 

Downstream Products

• 100855-98-9 6-acetyl-3-cyano-7-ethoxycarbonyl-4,7-dihydropyrazolo<1,5-a>pyrimidine-7-(α-anilino)acetate 
• 100855-99-0 6-acetyl-8-anilino-7,8-diethoxycarbonyl-7,8-dihydro-4H-pyrazolo<1,5-a><1,3>diazepine-3-carbonitrile 
• 100856-00-6 ethyl Z-β-anilino-α-ethoxycarbonyl-3-cyano-7-methyl-6-pyrazolo<1,5-a>pyrimidineacrylate 
• 100856-01-7 ethyl E-β-anilino-α-ethoxycarbonyl-3-cyano-7-methyl-6-pyrazolo<1,5-a>pyrimidineacrylate 
• 100856-02-8 8a,9-diethoxycarbonyl-8a,9-dihydro-2-methyl-1-phenyl-1H-pyrrolo<3,4-e>pyrazolo<1,5-a>pyrimidine-5-carbonitrile 
• 77937-06-5 5a-acetyl-6,6a-dicarbethoxy-5a,6a-dihydro-5-methyl-6H-cyclopropa<5a,6a>pyrazolo<1,5-a>pyrimidine-3-carbonitrile 

Relevant academic research and scientific papers

Ring Transformation of 6H-Cyclopropapyrazolopyrimidine. VI . Substituent Effect of 6-Substituted 5a-Acetyl-6a-ethoxycarbonyl-5a,6a-dihydro-6H-cyclopropapyrazolopyrimidine-3-carbonitriles

Synthesis and reactivity of 6-ethoxycarbonyl-, 6-phenyl- and 6-methyl-5a-acetyl-6a-ethoxycarbonyl-5a,6a-dihydro-6H-cyclopropapyrazolopyrimidine-3-carbonitriles 4, 5, and 7 are described.

SYNTHESIS OF 4H-PYRAZOLODIAZEPINE 1

6-Acetyl-8-ethoxycarbonyl-4H-pyrazolo-diazepine-3-carbonitrile (5) was synthesized by treatment of 2 with silicic acid